RAILS_ENV=production devise:setup giving error

RAILS_ENV=production devise:setup giving error  "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" on Rails 3

We have created one application (rails_app3) on Rails 3 and used Devise gem.

When run rake devise:setup in development its working fine, but when we run the command “RAILS_ENV=production devise:setup” its giving following error:

Missing host to link to! Please provide :host parameter or set default_url_options[:host]

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:473:in `url_for'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_dispatch/routing/url_for.rb:131:in `url_for'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_view/helpers/url_helper.rb:99:in `url_for'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_dispatch/routing/route_set.rb:195:in `user_confirmation_url'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/lib/devise/controllers/url_helpers.rb:32:in `send'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/lib/devise/controllers/url_helpers.rb:32:in `confirmation_url'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/app/views/devise/mailer/confirmation_instructions.html.erb:5:in `__usr_lib_ruby_gems_____gems_devise_______app_views_devise_mailer_confirmation_instructions_html_erb__607271297__615816948_0'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_view/template.rb:135:in `send'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_view/template.rb:135:in `render'

/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/notifications.rb:54:in `instrument'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_view/template.rb:127:in `render'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_view/render/rendering.rb:59:in `_render_template'

/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/notifications.rb:52:in `instrument'

/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/notifications/instrumenter.rb:21:in `instrument'

/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/notifications.rb:52:in `instrument'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_view/render/rendering.rb:56:in `_render_template'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/action_view/render/rendering.rb:26:in `render'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/rendering.rb:114:in `_render_template'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/rendering.rb:108:in `render_to_body'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/rendering.rb:101:in `render_to_string'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/rendering.rb:92:in `render'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/deprecated_api.rb:111:in `render'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:710:in `collect_responses_and_parts_order'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:725:in `each'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:725:in `each_template'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:720:in `each'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:720:in `each_template'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:706:in `collect_responses_and_parts_order'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:648:in `mail'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/app/mailers/devise/mailer.rb:33:in `setup_mail'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/app/mailers/devise/mailer.rb:6:in `confirmation_instructions'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/base.rb:151:in `send_action'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/base.rb:151:in `process_action'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/base.rb:120:in `process'

/usr/lib/ruby/gems/1.8/gems/actionpack-3.0.3/lib/abstract_controller/rendering.rb:40:in `process'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/old_api.rb:75:in `process'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:446:in `process'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:441:in `initialize'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:425:in `new'

/usr/lib/ruby/gems/1.8/gems/actionmailer-3.0.3/lib/action_mailer/base.rb:425:in `method_missing'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/lib/devise/models/confirmable.rb:54:in `send_confirmation_instructions'

/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/callbacks.rb:422:in `_run_create_callbacks'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/callbacks.rb:281:in `create'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/persistence.rb:246:in `create_or_update'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/callbacks.rb:277:in `create_or_update'

/usr/lib/ruby/gems/1.8/gems/activesupport-3.0.3/lib/active_support/callbacks.rb:413:in `_run_save_callbacks'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/callbacks.rb:277:in `create_or_update'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/persistence.rb:39:in `save'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/validations.rb:43:in `save'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/attribute_methods/dirty.rb:21:in `save'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/transactions.rb:237:in `save'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/transactions.rb:289:in `with_transaction_returning_status'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/connection_adapters/abstract/database_statements.rb:139:in `transaction'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/transactions.rb:204:in `transaction'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/transactions.rb:287:in `with_transaction_returning_status'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/transactions.rb:237:in `save'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/transactions.rb:248:in `rollback_active_record_state!'

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/transactions.rb:236:in `save'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/lib/devise/models/token_authenticatable.rb:29:in `reset_authentication_token!'

/usr/lib/ruby/gems/1.8/gems/devise-1.1.4/lib/devise/models/token_authenticatable.rb:39:in `ensure_authentication_token!'

/var/www/rails_applications/rails_app3/releases/20110120102714/lib/tasks/setup.rake:9

/usr/lib/ruby/gems/1.8/gems/activerecord-3.0.3/lib/active_record/validations.rb:33:in `create!'

/var/www/rails_applications/rails_app3/releases/20110120102714/lib/tasks/setup.rake:5

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain'

/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'

/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31

/usr/bin/rake:19:in `load'

/usr/bin/rake:19

My database.yml production block is:

production:

  adapter: mysql

  database: rails_app3_production

  username: produser

  password: produserpwd

  host:

  encoding: utf8


Any ideas why I am getting this error?